Questions I have a number of customers asking me these types question:
Are there are good practices on how to size disks for the storage pools. If I want a 5 TB pool, how many disks which size, does it matter ? Also are there any document limits regarding,...

It's pretty easy to move a volume group from one AIX system to another. You unmount all the file systems from the source volume group, varyoff the VG, export the volume group ( exportvg ), and then remove the disks from the source system ( rmdev -dl hdisk N )....

JUDGING A DISK BY ITS COVER When you have an hdisk and are wonderig what it might be used for, you can use the readvgda command. This displays all sorts of helpful infomation about the Volume Group Descriptor Area (VGDA) which is on every hdisk that belongs to...

Give bootinfo the boot If you want to get the size of a disk (virtual or physical), you can use the AIX getconf command . getconf
DISK_SIZE /dev/hdisk0 140013 The size is reported in MB, so the disk above is a 140 GB disk. You could use the bootinfo -s, but...

SERVING UP LVs, PVs and PAVs Since we've got redundant arrays on SANs these days, it may seem almost quaint to speak about software mirroring using the AIX Logical Volume Manager. Even so, LVM is very useful when you want to move data around. If you need to...

There are lots of good reasons for having spare disk for rootvg, as I
looked at in the post make
way for rootvg . With virtual disks you can resize your volume group
on the fly: Increase rootvg
dynamically If your rootvg “disk” is actually virtual,...

"Go live or go home" If you need to get a lot of data from one AIX host to another, there's
more than one way to do it quickly. During a migration to a new system, you may do a database dump or archive and want to get the data available to the new...

REDUNDANCY? YOU CAN SAY THAT AGAIN. In a dual-path VIO Server configuration, your SAN LUNs are (hopefully) protected from disk failures by being part of a RAID set of some kind. Ideally you've also got redundancy of adapters, switches, power and .... well a...